* include/gc.h (GC_INIT): Add DATASTART and DATAEND roots on AIX.
* include/private/gcconfig.h (RS6000): Add 64-bit AIX support.
Define USE_GENERIC_PUSH_REGS. Use AIX _data and _end symbols for
DATASTART and DATAEND roots.
* rs6000_mach_dep.s: Add function descriptor and traceback table.
From-SVN: r49218
* dyn_load.c: Define ElfW (if needed) for all targets,
not just GNU/Linux.
(GC_FirstDLOpenedLinkMap): Use it.
(GC_register_dynamic_libraries_dl): Use it.
* include/private/gcconfig.h: Define CPP_WORDSZ, ELF_CLASS
for sparcv9.
From-SVN: r48086
* include/gc_pthread_redirects.h: Generalize test to use GC_PTHREADS.
* linux_threads.c (WRAP_FUNC(pthread_join)): Conditionalized on
GC_FREEBSD_THREADS, handle strange interaction between system
pthread implementation and boehm-gc signal-handler architecture.
* tests/test.c (main): Conditionalized on GC_FREEBSD_THREADS,
set stack.
* include/private/gcconfig.h (configuration keyed off FREEBSD):
Define SIG_SUSPEND, SIG_THR_RESTART. Do not define
MPROTECT_VDB when GC_FREEBSD_THREADS is defined.
From-SVN: r46307
